JP2877025B2 - FRTP molding material and FRTP tubular molded body obtained using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular molded body made of fiber-reinforced thermoplastic resin (FRTP) such as a racket frame for tennis or badminton, etc.
An FRTP molding material for obtaining such an FRTP tubular molded body, and an FTP obtained by using the FRTP molding material.
The present invention relates to an RTP tubular molded body.

[0002]

2. Description of the Related Art Conventionally, FRs such as racket frames have been used.
As a material for FRTP molding used in the production of the TP tubular molded body, a matrix-forming thermoplastic resin such as polyamide or polycarbonate is once spun into a fibrous form to form a matrix fiber, and a matrix fiber tow made of this matrix fiber and glass Fiber and reinforcing fiber tow made of carbon fiber, etc. are blended to form a round-shaped yarn, and this yarn is used to melt-impregnate a tubular sleeve or a reinforcing fiber into a thermoplastic resin. There are known a completely impregnated tape formed by impregnating the reinforcing fiber, a partially impregnated tape obtained by impregnating only the thermoplastic resin near the outer periphery with the reinforcing fiber, and a unidirectional woven fabric formed by interweaving the reinforcing fiber and resin fiber.

[0003]

However, in the case of producing a FRTP tubular molded body using a conventional sleeve, a carbon fiber tow having a large number of tex (for example, 12K) is used as a fiber reinforcing tow for yarn. Carbon fiber tow) is used, the thickness of the reinforcing fiber tow becomes large, and a large void is generated at the intersection of the reinforcing fibers, and this void may remain as a void in the FRTP tubular molded body. However, there remains a problem in strength. In addition, since the intersecting portions of the reinforcing fibers have a large thickness, it is difficult to impregnate the resin uniformly, and wrinkles and resin pools are liable to occur in the obtained FRTP tubular molded body, which has a problem in appearance. Was.

When a conventional yarn is used, the thickness of the yarn is large, so that the obtained sleeve is also thick, and the weight per unit length is heavy. In the case of manufacturing a FRTP tubular molded article requiring lightness and strength, such as a frame, since only about three layers can be laminated, the degree of freedom in design is small and the strength is unsatisfactory. Furthermore, in conventional yarns, when fabricating a sleeve by sack weaving, the reinforcing fibers may fluff and the reinforcing fibers may be cut, in which case, reinforcing fiber dust is generated, There is a problem that the strength of the obtained FRTP tubular molded body is reduced.

In the case of using the completely impregnated tape, since the completely impregnated tape is already made of FRTP, it has no flexibility, it is difficult to fabricate a sleeve by sack weaving, and the filament winding method For example, when manufacturing an FRTP tubular molded body, it is difficult to wind it around a core material. When the partial impregnated tape is used, it is relatively flexible, but is expensive, so that the obtained FRTP tubular molded body also becomes expensive,
There is also a hard type partially impregnated tape, and when such a hard type is used, it is difficult to produce a sleeve as in the case of the completely impregnated tape described above, or it is difficult to wind the sleeve around the core material. . When the unidirectional woven fabric is used, it is expensive, and it is difficult to impregnate the reinforcing fiber with a resin, and the reinforcing fiber is fluffed when cross-woven.

Therefore, an object of the present invention is to provide an inexpensive FRTP tubular molded article having excellent strength and such an FRTP tubular molded article.
FRTP molding which has good impregnation of thermoplastic resin into reinforcing fibers to obtain a tubular molded body, has a large degree of freedom in design, has good handling properties, and has no fluffing of reinforcing fibers and is flexible. To provide materials for use.

[0007]

According to a first aspect of the present invention, there is provided an FRTP molding material comprising a ribbon-like reinforcing fiber.
Tow or ribbon-like yarns
Product sandwiched between thermoplastic resin films
It is characterized in that both ends along the longitudinal direction of the layer body are each fused. FRTP according to claim 2 of the present invention
In the molding material, a longitudinal direction of an alternating laminate in which a ribbon-like reinforcing fiber tow or a ribbon-like yarn and a wider thermoplastic resin film for supplying a matrix resin are alternately laminated. Characterized in that both end portions along the line are fused. Further, the FRTP according to claim 3
The FRTP according to claim 1 or 2, wherein the molding material is a molding material.
In the molding material, the heat
It is characterized in that many holes are formed in the plastic resin film . Further, the FRTP molding material according to claim 4
The FRTP according to any one of claims 1 to 3,
In the molding material, the heat
The plastic resin film is the ribbon-like reinforcing fiber tow or
Does not completely penetrate the ribbon yarn
Features. Further, the material for FRTP molding according to claim 5.
The FRT according to any one of claims 1 to 4.
It is characterized in that the thickness of the P molding material is 1.0 mm or less
And

Further, in the wide FRTP molding material according to claim 6 , a plurality of the FRTP molding materials according to any one of claims 1 to 5 are arranged in a longitudinal direction of the adjacent FRTP molding material. Are overlapped with each other, and the overlapping portions of these FRTP molding materials are fused together, and the arrangement direction of the reinforcing fibers is aligned in one direction.
It has characterized the Rukoto. Further, the FRTP according to claim 7
A tubular molded article is characterized by being obtained by using the FRTP molding material according to any one of claims 1 to 6 .

[0009]

EXAMPLES In order to make the present invention easier to understand,
An example will be described. These examples illustrate one embodiment of the present invention and do not limit the present invention. It can be arbitrarily changed within the scope of the present invention. First, a first embodiment of the FRTP tubular molded body of the present invention will be described. FIG. 1 shows a ribbon-shaped FRT used in the first embodiment.
1 shows an example of a P molding material. The ribbon-shaped FRTP molding material 1 is made of a ribbon-shaped reinforcing fiber tow 2.
The end portions 5, 5 along the longitudinal direction of the laminated body 4 sandwiched between the wider matrix resin supply thermoplastic resin films 3, 3 are fused to each other, and the thickness is flat. .

The ribbon-shaped reinforcing fiber tow 2 has a round cross-sectional shape, for example, a tex number of 12K.
The thickness obtained by opening the carbon fiber roving is thin and flat, the thickness is 1 mm or less, preferably 0.5 mm or less, and the width is 4 times or more, preferably 10 times or more the thickness. It is. Aramid fiber, glass fiber, carbon fiber, or the like is used as the reinforcing fiber constituting the ribbon-shaped reinforcing fiber tow 2 here.

The thermoplastic resin film 3 has a thickness of 100 μm or less, preferably 50 μm or less, and has a width between the ribbon-shaped reinforcing fiber tows 2.
The reinforcing fiber tow 2 does not protrude from both ends 5, 5 of the laminate 4, and has a certain degree that the ends 5, 5 of the laminate 4 can be fused. As the thermoplastic resin constituting the thermoplastic resin film 3, polyamide, polycarbonate, polyphenylene oxide, polyetherimide, or the like is used. Further, it is preferable that a large number of holes (not shown) are formed in the thermoplastic resin film 3. The size of the hole is 100 μm to 1 mm in diameter
And the degree of distribution of the holes is 1 to 50 holes / c.
m ² . When such holes are formed in the thermoplastic resin film 3, a case where a FRTP tubular molded body is molded by an autoclave method or the like using a sleeve or the like obtained by sack-wrapping the ribbon-shaped FRTP molding material 1 is used. At the time of evacuation, air bubbles remaining in the ribbon-shaped reinforcing fiber tow 2 can be discharged to the outside of the ribbon-shaped FRTP molding material 1 through the above-mentioned holes. Does not remain as a void.

The thickness of the ribbon-shaped FRTP molding material 1 is 1.0 mm or less, preferably 0.5 mm or less, and the width is 4 times or more, preferably 10 times or more the thickness. The weight ratio between the ribbon-shaped reinforcing fiber tow 2 and the thermoplastic resin film 3 constituting the ribbon-shaped FRTP molding material 1 is not particularly limited, and the required reinforcement in the FRTP tubular molded body is not limited. It is determined according to the content (Vf) of the fibers for use. Furthermore, the number of texes of the ribbon-shaped reinforcing fiber tow 3 can be appropriately determined according to the Vf value.

FIG. 2 shows the ribbon-shaped FRTP shown in FIG.
1 shows an example of a manufacturing apparatus suitably used for manufacturing a molding material 1. In the figure, reference numeral 11 denotes a first delivery roller 12a, 1 around which a ribbon-shaped reinforcing fiber tow 2 is wound.
2b is a pair of second delivery rollers around which the thermoplastic resin films 3 and 3 are respectively wound, 13 is a first guide roller,
14a and 14b are a pair of second guide rollers, 15
Denotes a heat roll, 16 denotes a silicone rubber roll, and 17 denotes a take-up roller.

The following steps are used to produce the ribbon-shaped FRTP molding material 1 of FIG. 1 using the production apparatus shown in FIG. First, the ribbon-shaped reinforcing fiber tow 1 is sent out from the first delivery roller 11 to the first guide roller 13,
Further, it is sent out between the second guide rollers 14a and 14b. At the same time, the thermoplastic resin films 3, 3 are transferred from the second delivery rollers 12a, 12b to the second guide rollers 14a, 14b.
14b, and the upper and lower portions of the ribbon-shaped reinforcing fiber tow 1 are sandwiched between these thermoplastic resin films 3 to form a laminate 4. Next, the second guide rollers 14a, 1
4b, the laminate 4 is sent out between the heat roll 15 and the silicone rubber roll 16 and heated and pressed. Then, since there is no fiber having heat insulating properties between the upper and lower thermoplastic resin films 3 and 3 located at both ends 5 and 5 of the laminate 4,
The film at that portion is easily fused, and the ribbon-shaped reinforcing fiber tow 1 located at the intermediate portion 6 is in a ribbon shape in which the thermoplastic resin forming the thermoplastic resin films 3 and 3 is not completely soaked. The FRTP molding material 1 is obtained. Finally, the ribbon-shaped FRTP molding material 1 is cooled between the heat roll 15 and the silicone rubber roll 16 by a cooling roller (not shown).
After cooling to near room temperature, it is taken up by a take-up roller 17.

In this ribbon-shaped FRTP molding material 1, a thin ribbon-shaped reinforcing fiber tow 2 is sandwiched between wider thermoplastic resin films 3 and 3 for supplying matrix resin. Therefore, this ribbon-shaped FR
When the FRTP tubular molded body is hot molded using the TP molding material 1, the reinforcing fibers are well impregnated with the thermoplastic resin, and wrinkles and resin pools are less likely to occur. It is possible to get a body. The ribbon-shaped FRTP molding material 1 is thin and flat, and the ribbon-shaped reinforcing fiber tow 1 located at the intermediate portion 6 of the laminate 4 includes a thermoplastic resin film. The thermoplastic resin forming 3, 3 is not completely infiltrated, so that it is flexible.
Since the thermoplastic resin film 3 is hardly peeled off because the resin 5 is fused, and because the reinforcing fiber tow 1 in the form of a ribbon is surrounded by the thermoplastic resin film, the reinforcing fiber does not disperse. In addition, a prepreg for winding a sleeve, a woven fabric, or a filament can be easily manufactured. The ribbon-shaped FRTP molding material 1
Since the reinforcing fibers are not fluffed when producing a sleeve or the like by weaving a bag, the reinforcing fibers are not cut off, so that the generation of the reinforcing fiber dust can be prevented and obtained. A decrease in the strength of the FRTP tubular molded body can be prevented. Furthermore, in the ribbon-shaped FRTP molding material 1, the ribbon-shaped reinforcing fiber tow 2 is easily obtained from an inexpensive reinforcing fiber tow having a large number of texes (for example, a 12K carbon fiber tow). , Cheap.

FIG. 3 shows an example of the sleeve used in the first embodiment. The sleeve 20 has a cylindrical shape that is woven in a bag using the ribbon-shaped FRTP molding material 1 shown in FIG. In such a sleeve 20, since the ribbon-shaped FRTP molding material 1 is thin and flat, the width is wide and the area occupied is increased. Even if the number of shots is reduced and the weight is reduced, it will not be noticeable, resulting in a dazzling thin sleeve. Therefore, since the sleeve has a light weight per unit length, it can be laminated in a multilayer structure, and the reinforcing fibers can be arranged so that the obtained FRTP tubular molded article has a desired strength. The degree of freedom is improved.

FIG. 4 is a view for explaining an example in which the FRTP tubular molded body of the first embodiment is manufactured by a hollow internal pressure molding method. In the production example here, a case where the obtained FRTP tubular molded body is a racket frame will be described.
First, as shown in FIG. 4A, a plurality (four in the drawing)
Are laminated concentrically to form a hollow laminated body 2.
Let it be 1. Next, as shown in FIG. 4B, the hollow laminate 21 is put on the outer periphery of the silicone resin tube 22. Next, as shown in FIG. 4 (C), the hollow laminate 21 together with the tube 22 is placed in a mold 24 for forming a racket frame.
Place within. At this time, the auxiliary member 25 is
Prepregs are also placed at the same time.

Next, the mold 24 is heated to a temperature equal to or higher than the melting point of the thermoplastic resin forming the thermoplastic resin film 3 to melt the thermoplastic resin and impregnate the reinforcing fiber tow 2 in the form of a ribbon. During this heating, air pressure G is applied to the inside of the tube 22, and the hollow laminate 20 is pressed against the mold 24 from the inside. Thereafter, the molded product is obtained by cooling while maintaining the air pressure, releasing the tube pressure, and removing the mold. Finally, when the tube 22 is pulled out from the molded product, an intended FRTP tubular molded product as shown in FIG. 4D is obtained.

In the FRTP tubular molded body of the first embodiment obtained by using the sleeve 20 woven with the ribbon-shaped FRTP molding material 1 as described above, the sleeve 2
Since the ribbon-shaped reinforcing fiber tow 2 of the ribbon-shaped FRTP molding material 1 constituting the ribbon-shaped reinforcing fiber tow 2 is thin and flat, the thickness of the ribbon-shaped reinforcing fiber tow 2 at the intersection between the ribbon-shaped reinforcing fiber tows 2 is reduced. Since the step is small and the voids generated in this portion are small, voids and the like remaining in the product are minute and the strength is excellent. Also, this FRT
Since the P tubular molded body is obtained using the inexpensive ribbon-shaped FRTP molding material 1, it is inexpensive. FIG.
Is for explaining the effect of the FRTP tubular molded body of the first embodiment, and heats the sleeve 20 of FIG. 3 to melt the thermoplastic resin 3a forming the thermoplastic resin film 3,
A ribbon-shaped reinforcing fiber tow 2 impregnated with
It can be seen that the step between the tows at the intersection of the ribbon-like reinforcing fiber tows 2 is small.

In the above-described FRTP tubular molded article of the first embodiment, the case where the ribbon-shaped FRTP molding material 1 using the ribbon-shaped reinforcing fiber tow 2 is used has been described. The same can be done when a ribbon-shaped FRTP molding material is used in which both ends along the longitudinal direction of a laminate sandwiched between wider thermoplastic resin films for supplying a matrix resin are each fused. The ribbon-like yarn used here is a thin, flat one obtained by opening a roving comprising a matrix fiber of a thermoplastic resin and a reinforcing fiber.

Also, the above-mentioned ribbon-shaped reinforcing fiber tow 2
It may contain a matrix fiber of a thermoplastic resin. Further, as the laminate 4 of the ribbon-like FRTP molding material 1, the ribbon-like reinforcing fiber tow 2 or the above-described ribbon-like yarn and the wider thermoplastic resin film for supplying a matrix resin are alternately formed. It may be a stacked alternate laminate. In addition, the above-mentioned ribbon-shaped FR
In the example of manufacturing the TP molding material 1, the case where a hot roll is used as the manufacturing apparatus has been described, but a belt, a press, or the like may be used. In the production example of the FRTP tubular molded body of the first embodiment, the case where the ribbon-shaped FRTP molding material 1 is produced by the hollow inner pressure molding method using the sleeve 20 formed by weaving the ribbon 1 has been described. Woven fabric obtained by interweaving FRTP molding material 1 in a shape of
A prepreg for filament winding may be produced using the ribbon-shaped FRTP molding material 1, and may be manufactured by various molding methods such as an autoclave molding method and a filament winding method. In that case, since the ribbon-shaped FRTP molding material 1 is flexible as described above,
Winding around the core material is easy.

Next, a second embodiment of the FRTP tubular molded article of the present invention will be described. FRTP of this second embodiment
The difference between the tubular molded body and the FRTP tubular molded body of the first embodiment is that the tubular molded body is obtained by using a wide FRTP molding material 30 as shown in FIG. This wide FRTP
As the molding material 30, a plurality of (six in the drawing) ribbon-shaped FRTP molding materials 1 shown in FIG. 1 are formed at the ends along the longitudinal direction of adjacent ribbon-shaped FRTP molding materials 1 and 1. 5 and 5 are arranged so as to overlap each other, and the overlapping portions 31 of the ribbon-shaped FRTP molding materials 1 are fused to each other, and the arrangement direction of the reinforcing fibers is aligned in one direction. Things. This wide FRTP molding material 30
Has a thickness of 1.0 mm or less, preferably 0.5 mm or less.

FIGS. 7 to 9 show the wide F shown in FIG.
FIG. 3 is a diagram for explaining a manufacturing apparatus suitably used for manufacturing the RTP molding material 30. In the figure, reference numeral 34 is a first delivery roller, 35 is a first guide roller, 36 is a silicone rubber roll, 37 is a first heat roll, 38 is a presser roll, 39
Is a drum.

The following steps are used to produce the wide FRTP molding material 30 shown in FIG. 6 using the apparatus shown in FIG. The ribbon-like FRTs adjacent to the ribbon-like FRTP molding materials 1...
The P-forming materials 1, 1 are fed to the first guide roller 35 so that the ends 5, 5 along the longitudinal direction overlap each other, and further, these ribbon-like FRTP-forming materials 1 ... (six in the drawing) With a silicone rubber roll 36 and a first heat roll 37
And heated between. Then, as shown in FIG. 9, the surface temperature of the portions A... Where the first heat roll 37 contacts the overlapping portions 31... Of the ribbon-shaped FRTP molding materials 1. Are higher than the surface temperature of the part B contacting the other parts, so that the temperature applied to the overlapping part 31 of the ribbon-like FRTP molding material 1. It becomes higher than the temperature applied to the parts other than the parts 31.

Next, a plurality of ribbon-shaped FRTP molding materials 1... Are placed between the silicone rubber roll 36 and the first heat roll 37 along the longitudinal direction of the adjacent ribbon-shaped FRTP molding materials 1. Are fed between the presser roll 38 and the drum 39 in a state where the end portions 5 and 5 are overlapped with each other, and these ribbon-like FRTP molding materials 1... Are pressed by the presser roll 38 and wound around the drum 39. When taken, the thermoplastic resin films 3, 3 of the adjacent ribbon-shaped FRTP molding materials 1, 1 located in the overlapping portions 31 of the ribbon-shaped FRTP molding materials 1,.
A wide FRTP molding material 30 as shown in FIG. 6 in which ribbon-like FRTP molding materials 1 are connected is obtained.

The wide FRTP molding material 30 has the same effect as the ribbon-shaped FRTP molding material 1 described above, and has a wide width. Depending on the use, it can be used as a prepreg for molding without preparing a sleeve or a woven fabric. The FRTP tubular molded article of the second embodiment obtained using such a wide FRTP molding material 30 has the same operation and effect as the above-described FRTP tubular molded article of the first embodiment, and When the wide FRTP molding material 30 is directly used as a prepreg, the F
In the RTP molding material 30, since the arrangement direction of the reinforcing fibers is aligned in one direction, there are no intersections between the reinforcing fibers, and therefore, voids due to voids generated at the intersections between the reinforcing fibers are eliminated. It is less likely to remain in the product, resulting in better strength.

In the above-described example of manufacturing the wide FRTP molding material 30, the heating device is only the first heating roll 37. However, a heating roll may be provided instead of the first guide roller 35. Instead of providing the first heat roll 37 at a position facing the silicone rubber roll 36, the first heat roll 37 may be provided at a position facing the drum 39 as shown by a broken line in FIG. Instead of providing the roll 37, a plurality of blowers for blowing hot air are provided in front of the press roll 38 and the drum 39, and a ribbon-shaped F fed between the press roll 38 and the drum 39 is provided.
The temperature applied to the overlapping portions 31 of the RTP molding materials 1 may be higher than the temperature applied to portions other than the overlapping portions 31.

FIG. 10 is a view showing another example of a manufacturing apparatus suitably used for manufacturing the wide FRTP molding material 30 shown in FIG. In the figure, reference numeral 44 is a first delivery roller, 45 is a first guide roller, 46 is a silicon rubber roll, 47 is a first heat roll, 48 is a pressing roll, 49 is a drum, and 50 is a movable plate. The movable plate 50 is provided with a first delivery roller 44, a first guide roller 45, a silicone rubber roll 46, and a first heat roll 47 so that the movable plate 50 can traverse along the length direction of the drum 49. I have.

Using the apparatus shown in FIG. 10 to manufacture the wide FRTP molding material 30 of FIG. 6 by a batch method, the following steps are performed. While moving the movable plate 50 along the length direction of the drum 49, one ribbon-shaped FRTP molding material 1 is supplied from the first delivery roller 44 via the first guide roller 45 to the silicon rubber roll 46 and the first heat roll. 47
The ribbon-shaped FRTP molding material 1 is pressed by the press roll 48 and heated while being fed between the press roll 48 and the drum 49.
In winding, the end 5 of the ribbon-shaped FRTP molding material 1 wound first on the drum 39 and the end 5 of the ribbon-shaped FRTP molding material 1 wound on the drum 39 later overlap. The movable plate 50 is moved. In this manner, the thermoplastic resin films 3 and 3 located in the overlapping portion 31 of the ribbon-like FRTP molding material 1 are fused together, and the wide FRTP molding material 30 as shown in FIG.
Is obtained.

[0030]

As described above, since the FRTP molding material of the present invention is obtained by fusing a laminate in which reinforcing fibers are sandwiched between thermoplastic resin films for supplying a matrix resin, the thermoplastic resin is used as a thermoplastic. Since the resin film is not easily peeled off and the reinforcing fibers are surrounded by the thermoplastic resin film, the reinforcing fibers do not come apart,
There is an advantage that the handleability at the time of producing a sleeve or the like is good, the reinforcing fiber is not fluffed, and the fiber is flexible. In addition, since the ribbon-shaped FRTP molding material or the wide FRTP molding material of the present invention has the above-described configuration, the reinforcing fibers can be well impregnated with the thermoplastic resin, and the degree of freedom in design can be improved. It is large, has good handling properties, and has the advantage that the reinforcing fibers do not fluff and are flexible. Further, the FRTP tubular molded article of the present invention can be obtained by using the above-mentioned FRTP molding material or the wide
Since it is obtained by using the RTP molding material, there is an advantage that the strength is excellent and the cost is low.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one example of a ribbon-shaped FRTP molding material used for an FRTP tubular molded body of a first embodiment.

FIG. 2 is a schematic configuration diagram showing an example of a manufacturing apparatus suitably used for manufacturing the ribbon-shaped FRTP molding material shown in FIG.

FIG. 3 is a front view showing an example of a sleeve used for the FRTP tubular molded body of the first embodiment.

FIG. 4 is a diagram for explaining a production example of the FRTP tubular molded body of the first embodiment.

FIG. 5 is a view for explaining the effect of the FRTP tubular molded body of the first embodiment.

FIG. 6 is a cross-sectional view showing an example of a wide FRTP molding material used for the FRTP tubular molded body of the second embodiment.

FIG. 7 is a schematic configuration diagram for explaining a manufacturing apparatus suitably used for manufacturing the wide FRTP molding material shown in FIG.

8 is a perspective view showing a manufacturing apparatus suitably used for manufacturing the wide FRTP molding material shown in FIG.

9 is a partially enlarged view of the manufacturing apparatus shown in FIG.

FIG. 10 is a perspective view showing another example of the manufacturing apparatus suitably used for manufacturing the wide FRTP molding material shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ribbon-shaped FRTP molding material, 2 ... Ribbon-shaped reinforcing fiber tow, 3 ... Thermoplastic resin film for supplying matrix resin, 4 ... Laminated body, 5 ... End part , 6... Middle part, 30... Wide FRTP molding material, 31.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B29B 11/16 B29B 15/08-15/14 C08J 5/24 B32B 1/00-35/00 B29C 67 / 12-67/18

Claims (7)

(57) [Claims] 1. A laminate in which a ribbon-shaped reinforcing fiber tow or a ribbon-shaped yarn is sandwiched by a wider thermoplastic resin film for supplying a matrix resin, and both ends along a longitudinal direction of the laminate are fused. Ribbon-shaped FR
TP molding material. 2. Both ends along the longitudinal direction of an alternating laminate in which a ribbon-like reinforcing fiber tow or a ribbon-like yarn and a wider thermoplastic resin film for supplying a matrix resin are alternately laminated. A ribbon-shaped FRTP molding material that is fused. 3. The thermoplastic resin for supplying said matrix resin.
3. A large number of holes are formed in a fat film.
The material for FRTP molding according to the above. 4. A thermoplastic resin for supplying said matrix resin.
The grease film is a ribbon-like reinforcing fiber tow or rib.
Claims 1 to 3 which are not completely impregnated in the yarn
3. The material for FRTP molding according to any one of 3. 5. The method according to claim 1, wherein the thickness is 1.0 mm or less.
5. The material for FRTP molding according to any one of to No. 4. 6. The FR according to any one of claims 1 to 5,
Plural sheets of the TP molding material are arranged so that the ends along the longitudinal direction of the adjacent FRTP molding materials overlap with each other,
A wide FRTP molding material in which the overlapping portions of these FRTP molding materials are each fused and the arrangement direction of the reinforcing fibers is aligned in one direction. 7. The FR according to any one of claims 1 to 6,
An FRTP tubular molded article obtained by using a TP molding material.